Buffer Overflow in Tenda F456 from Remote Manipulation
CVE-2026-7056

8.7HIGH

Key Information:

Vendor

Tenda
Status
F456
Vendor
CVE Published:
26 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7056?

A vulnerable function, fromSafeUrlFilter, within the Tenda F456's httpd component exposes the product to buffer overflow attacks. By manipulating the 'page' argument of the /goform/SafeUrlFilter endpoint, attackers can exploit this vulnerability remotely, leading to potential unauthorized access and execution of arbitrary code.

Affected Version(s)

F456 1.0.0.5

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-7056 - Proof of Concept

References

https://vuldb.com/vuln/359629
vdb-entrytechnical-description
https://vuldb.com/vuln/359629/cti
signaturepermissions-required
https://vuldb.com/submit/798458
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

LtzHust (VulDB User)
.